ipc: remove use of seq_printf return value

The seq_printf return value, because it's frequently misused,
will eventually be converted to void.

See: commit 1f33c41c03da ("seq_file: Rename seq_overflow() to
     seq_has_overflowed() and make public")

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/ipc/sem.c b/ipc/sem.c
index 9284211..d1a6edd 100644
--- a/ipc/sem.c
+++ b/ipc/sem.c
@@ -2170,17 +2170,19 @@
 
 	sem_otime = get_semotime(sma);
 
-	return seq_printf(s,
-			  "%10d %10d  %4o %10u %5u %5u %5u %5u %10lu %10lu\n",
-			  sma->sem_perm.key,
-			  sma->sem_perm.id,
-			  sma->sem_perm.mode,
-			  sma->sem_nsems,
-			  from_kuid_munged(user_ns, sma->sem_perm.uid),
-			  from_kgid_munged(user_ns, sma->sem_perm.gid),
-			  from_kuid_munged(user_ns, sma->sem_perm.cuid),
-			  from_kgid_munged(user_ns, sma->sem_perm.cgid),
-			  sem_otime,
-			  sma->sem_ctime);
+	seq_printf(s,
+		   "%10d %10d  %4o %10u %5u %5u %5u %5u %10lu %10lu\n",
+		   sma->sem_perm.key,
+		   sma->sem_perm.id,
+		   sma->sem_perm.mode,
+		   sma->sem_nsems,
+		   from_kuid_munged(user_ns, sma->sem_perm.uid),
+		   from_kgid_munged(user_ns, sma->sem_perm.gid),
+		   from_kuid_munged(user_ns, sma->sem_perm.cuid),
+		   from_kgid_munged(user_ns, sma->sem_perm.cgid),
+		   sem_otime,
+		   sma->sem_ctime);
+
+	return 0;
 }
 #endif